Country Code: + International Call Prefix: Trunk Prefix: Contents. [hide]. 1 Calling formats; 2 List of area codes in Benin; 3 Mobile phone numbers. Benin country code is Benin phone code you must dial before to call Benin from another country. dialing code must be entered before calling Benin from ISO code 3N : . Which country has ?, The country code belongs to Benin. Find area codes of Beninese cities and doing research on the reverse directory.